SKF 6001-2Z 12x28x8 Deep Groove Ball Bearing

SKF 6001-2Z, also commonly identified in trade as SKF 6001 ZZ, is a single-row deep groove ball bearing measuring 12x28x8 mm. Its principal dimensions are d = 12 mm bore diameter, D = 28 mm outside diameter and B = 8 mm width. The 2Z design has non-contact metal shields on both sides, while the standard version has Normal CN radial internal clearance.

SKF 6001-2Z - Product Characteristics

SKF 6001-2Z belongs to the 6000 series of single-row deep groove ball bearings. The bearing is closed on both sides by metal shields rather than contact seals. SKF lists 2Z as the manufacturer suffix for a bearing shielded on both sides.

Verified technical data for this configuration are:

Manufacturer / Brand: SKF
Manufacturer Designation: 6001-2Z
Common Commercial Designation: 6001 ZZ
Bearing Type: Single-row deep groove ball bearing
Dimensions: 12x28x8 mm
d - Bore Diameter: 12 mm
D - Outside Diameter: 28 mm
B - Width: 8 mm
Number of Rows: 1
Bore Type: Cylindrical
Closure: Shields on both sides
Shield Type: Non-contact
Radial Internal Clearance: CN / Normal
Cage: Sheet metal
Lubrication: Grease
Basic Dynamic Load Rating C: 5.40 kN
Basic Static Load Rating C0: 2.36 kN
Fatigue Load Limit Pu: 0.10 kN
Reference Speed: 60,000 r/min
Limiting Speed: 30,000 r/min
Mass: approximately 0.022 kg.

Dimensions

The principal dimensions of SKF 6001-2Z are:

d - Bore Diameter: 12 mm
D - Outside Diameter: 28 mm
B - Bearing Width: 8 mm
Commercial Size: 12x28x8 mm

For this deep groove ball bearing, the dimensional notation 12x28x8 mm corresponds to d x D x B.

Additional catalogue dimensions include:

d1: approximately 17 mm
D2: approximately 24.72 mm
r1,2 min.: 0.3 mm
da min.: 14 mm
da max.: 16.9 mm
Da max.: 26 mm
ra max.: 0.3 mm.

Bearing Construction

SKF 6001-2Z is a non-separable, single-row deep groove ball bearing. The rolling elements operate between deep raceway grooves in the inner and outer rings.

This raceway geometry enables the bearing to accommodate primarily radial loads, while also supporting axial loads in both directions.

The exact 6001-2Z configuration has one row of balls, a cylindrical bore, sheet-metal cage and two non-contact shields.

2Z Metal Shields

The suffix 2Z is an important part of the exact SKF designation.

For SKF 6001-2Z, the bearing has:

Closure: both sides
Type: metal shields
Contact: non-contact.

The shields help retain grease within the bearing while restricting the entry of larger contaminants. Because they are non-contact shields, their operating principle differs from SKF contact-sealed variants.

The commercial notation ZZ is widely used in the bearing market for double-shielded bearings, but SKF's precise manufacturer designation for this product is 6001-2Z.

CN Radial Internal Clearance

The standard SKF 6001-2Z has CN radial internal clearance, meaning Normal clearance.

This distinguishes it from:

SKF 6001-2Z/C3

which has C3 radial internal clearance greater than Normal. Both versions have dimensions of 12x28x8 mm and shields on both sides, but their internal-clearance specifications differ.

Therefore:

6001-2Z ≠ 6001-2Z/C3

when the required radial internal clearance is part of the machine specification.

Load Ratings

SKF catalogue data for 6001-2Z specify:

C - Basic Dynamic Load Rating: 5.40 kN
C0 - Basic Static Load Rating: 2.36 kN
Pu - Fatigue Load Limit: 0.10 kN.

The deep groove construction enables radial load transmission together with axial loads acting in either direction.

C, C0 and Pu are engineering parameters used for bearing selection and life calculations. They should not be interpreted as simple universal maximum loads for every installation.

Speed Ratings

For SKF 6001-2Z, the catalogue speed values are:

Reference Speed: 60,000 r/min
Limiting Speed: 30,000 r/min.

The reference speed and limiting speed are different technical parameters and should not be treated as equivalent.

Actual permissible operating speed in a machine also depends on load, lubrication, fits, temperature and other operating conditions.

Meaning of 6001-2Z

The designation identifies the bearing configuration:

6 - deep groove ball bearing

60 - dimensional series

01 - bore code corresponding to 12 mm

2Z - metal shields on both sides

The complete SKF designation 6001-2Z should therefore be used in the technical specification, even when customers search for the product as 6001 ZZ SKF.

SKF 6001-2Z vs 6001-2Z/C3

Both variants have:

d = 12 mm
D = 28 mm
B = 8 mm
metal shields on both sides

The difference is radial internal clearance:

SKF 6001-2Z: CN / Normal clearance
SKF 6001-2Z/C3: C3 / greater-than-Normal clearance.

These variants should therefore be maintained as separate product configurations.

SKF 6001-2Z vs W 6001-2Z

The W prefix is significant and must not be omitted.

SKF 6001-2Z is the standard bearing-steel configuration discussed on this page.

SKF W 6001-2Z is a stainless steel deep groove ball bearing and has different technical data, including a lower dynamic load rating of 4.42 kN. SKF lists W 6001-2Z as a separate product.

Therefore:

6001-2Z ≠ W 6001-2Z

despite identical principal dimensions of 12x28x8 mm.

Selection and Interchangeability

When selecting an equivalent for SKF 6001-2Z, the dimensions alone are insufficient. The complete configuration should be compared, particularly the 12 mm bore, 28 mm outside diameter, 8 mm width, double non-contact shields, CN internal clearance, load ratings and required operating speed.

A bearing identified simply as 6001 ZZ 12x28x8 from another manufacturer may have matching envelope dimensions but should not automatically be considered a fully verified technical equivalent without checking its closure design, clearance and performance data.

Technical Specification

Manufacturer / Brand: SKF
Designation: 6001-2Z
Commercial Designation: 6001 ZZ
Product Type: Deep groove ball bearing
Construction: Single row
Dimensions: 12x28x8 mm
d - Bore Diameter: 12 mm
D - Outside Diameter: 28 mm
B - Width: 8 mm
Bore Type: Cylindrical
Closure: Shielded on both sides
Shield Type: Non-contact
Radial Internal Clearance: CN / Normal
Cage: Sheet metal
Lubrication: Grease
Basic Dynamic Load Rating C: 5.40 kN
Basic Static Load Rating C0: 2.36 kN
Fatigue Load Limit Pu: 0.10 kN
Reference Speed: 60,000 r/min
Limiting Speed: 30,000 r/min
Mass: approximately 0.022 kg.

FAQ

What are the dimensions of SKF 6001-2Z?

SKF 6001-2Z measures 12x28x8 mm: d = 12 mm bore diameter, D = 28 mm outside diameter and B = 8 mm width.

Is SKF 6001 ZZ the same as SKF 6001-2Z?

6001 ZZ is the common commercial notation for a bearing shielded on both sides. SKF's precise manufacturer designation for this configuration is 6001-2Z.

What type of bearing is SKF 6001-2Z?

It is a single-row deep groove ball bearing with non-contact metal shields on both sides.

What does 2Z mean?

2Z means that the bearing has metal shields on both sides. For SKF 6001-2Z these are non-contact shields.

What internal clearance does SKF 6001-2Z have?

The standard SKF 6001-2Z has CN / Normal radial internal clearance. C3 is a separate variant designated 6001-2Z/C3.

What are the load ratings of SKF 6001-2Z?

The basic dynamic load rating is C = 5.40 kN, basic static load rating C0 = 2.36 kN, and fatigue load limit Pu = 0.10 kN.

What is the limiting speed of SKF 6001-2Z?

The limiting speed is 30,000 r/min, while the reference speed is 60,000 r/min.

Is W 6001-2Z the same bearing?

No. W 6001-2Z is the stainless steel SKF variant and has different technical parameters. It should remain a separate product.

AI Overview

SKF 6001-2Z, commonly searched as SKF 6001 ZZ, is a single-row deep groove ball bearing measuring 12x28x8 mm, with non-contact metal shields on both sides and CN radial internal clearance. Its ratings are C = 5.40 kN, C0 = 2.36 kN and Pu = 0.10 kN, with a limiting speed of 30,000 r/min.